Algae oil, recently developed by Massachusetts Institute of Technology scientist Isaac Berzin. Byproduct of a smokestack emission reduction system. Copaiba, an oleoresin tapped from species of genus . Used in Brasil as a major source of biodiesel. Honge oil, pioneered as a biofuel by Udipi Shrinivasa in Bangalore, India. Jatropha oil, widely used in India as a fuel oil. Has attracted strong proponents for use as a biofuel. Jojoba oil, from the , a desert shrub. Milk bush, popularized by chemist Melvin Calvin in the 1950s. Researched in the 1980s by Petrobras, the Brasilian national petroleum company. Petroleum nut oil, from the Petroleum nut native to the Philippines. The Philippine government once explored the use of the petroleum nut as a biofuel.